Improvement in steam-governors



-2 Sheets SheetT.

M. MUC'HIN. I

Steam-Governor. 5 955 Y Pa tented Feb.16,1875.

THE GRAPHIC C0.PHOTO-LlTN-39 $.41 PARK PLAOE ILY.

MATTHEW MUOHIN, or RIGA, RUSSIA.

IMPROVEMENT IN STEAM-GOVERNORS.

Specification forming part of Letters PatentNo. 159,955, dated February16, 1875; application filed December 24, 1874.

To all whom rt may concern:

Be it known that I, 1VIATTHEW MUoHIN, of the city of Riga, in the Empireof Russia, have invented an Improved Governor for Steam-Engines, ofwhich the following is a specification:

The governor for steam-engines shown in the drawings hereto annexed isacting by centrifu gal power.

Figures 1 and 2 are side elevations, showing the governor applied in avertical as well as a horizontal position. Fig. 3 is a plan of the same.

The vertical governor-shaft ais put in motion by the bevel-gear b, whichis driven by the horizontal shaft 0. The latter receives its motionthrough the crank-shaft of the engine by means of the pulley d. Thebevel-gear b may also be affixed directly to the crank-shaft of theengine, and the shaft 0 in that case is dispensed with. The shaft to isheld in its vertical position by any suitable bearings, and carries thelever 6, having a ball, k, affixed to each end, and is pivoted to theshaft coin such a manner that it will, during the rotation of said shaftto by the centrifugal force of the balls 70, have a tendency to assume anormal position in relation to the shaft to. The small rod h connectsthe lever e with the sleeve 9, which is only sliding butnot turning onthe shaft (0, so that, when the lever c is turning around its horizontalpin the sleeve 9 is slidin g. On the external surface of this sleeve gare grooves acting as teeth, and gearing with the toothed segment t,which, being placed on the axle w of the throttle-valve, acts on thelatter. The weight at, applied to the lower part of the hand 2, alwaystends to restore this hand to its vertical position so soon as it leavesthe same, and thus pushes the lever 6 back to its original obliqueposition. When the lever e is put in a certain oblique position for thenormal number of rotations, and the apparatus adjusted, the centrifugalpower of the balls 70 turning rapidly will tend to put the lever e in ahorizontal position. Thereby the sleeve g is raised, and thethrottlevalve more closed.

As soon as the rapidity of the turning decreases, the weight m, affixedto the lower end of the hand 2, which was in an oblique position, willpush down the sleeve g, and, by means of the rod h, restore the lever c,with the balls k, tothe former position, whereby the throttle-valve ismore opened.

The horizontal governor contains substantially the same parts ofconstruction as the vertical. They are marked with the same letters ofreference.

The difference between the two consists in the position of thegovernor-shaft a, which, instead of vertically, is placed horizontally;in consequence whereof the hand 2 is not parallel with the shaft a; and.under these circumstances, the shaft to can receive its motion directlyfrom the crank-shaft of the steam-engine by means of gearing or belts,rendering thus the shaft 0 superfluous.

The shaft a may be placed in cushions or between centers.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s

In a governor for steam-engines, the combination of the shaft a, toothedsleeve 9, mounted on said shaft a, with capability of sliding to andfro, the lever h, and the lever 6, provided with a ball at both ends,with the toothed segment 1', shaft to, index-hand z, the weight m, and avalve, substantially as and for the purposes shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this23d day of September, 1874.

MATTHEW MUOHIN.

Witnesses:

E. WoLLEYDT, F. HAUSMANN.

